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 A108896 Numbers such that the outer 2 digits are 9 and the inner digits are 4. 0
 949, 9449, 94449, 944449, 9444449, 94444449, 944444449, 9444444449, 94444444449, 944444444449, 9444444444449, 94444444444449, 944444444444449, 9444444444444449, 94444444444444449, 944444444444444449 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS These numbers are all composite. LINKS Cino Hilliard, Proof 94..49 FORMULA S(x)=9*10^(x+1)+ 9 + 40*(10^x-1)/9. PROG (PARI) S(n, r, m)=for(x=1, n, y=m*10^(x+1)+m+r*10*(10^x-1)/9; print1(y", ")) CROSSREFS Sequence in context: A020366 A217936 A013532 * A096954 A048267 A073500 Adjacent sequences:  A108893 A108894 A108895 * A108897 A108898 A108899 KEYWORD easy,nonn,base AUTHOR Cino Hilliard (hillcino368(AT)gmail.com), Jul 16 2005 STATUS approved

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